You can kill lulu's pix gaining 25 gold
the pix will instantly re-spawns giving you opportunity for 25 more gold. This can generate infinite gold for the enemy team.
Pix can also block skill-shots saving lulu from significant damage for the low price of 25 gold to the enemy.
EDIT: http://prntscr.com/76eod9 - Targeting with AA's
http://prntscr.com/76epfs - Hitting with skill shots
EDIT 2: Lulu's E does not work at all other than on yourself
EDIT 3: Killing pix counts as 1 CS on your screen but on everyone else's screens pix does not count
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